02:08AM | 04/19/06
Member Since: 04/18/06
1 lifetime posts
Help please I am installing a 18x20 carport and need to know how to square the foundation for it.

Thanks to all for your advice


doug seibert

02:46AM | 04/19/06
Member Since: 08/10/02
843 lifetime posts
Generally you SQUARE one corner of the carport foundation.....then determine the length and width of the structure and square a second corner and third corner.........The 6-8-10 rule is a basic math "rule"'s a link (to a 1900's book on the subject).....

The two diagonal measurements should then be equal.......(about 26.9 feet).....if not adjust the stringlines.......

Glenn Good

05:06PM | 05/14/06
Member Since: 09/10/03
320 lifetime posts
The best way to square any foundation is to first lay it out roughly (use a framing square or the 6-8-10 rule). Then pull diagonal measurements between cross corners. When the parallel walls measure the same, and the measurements between both sets of opposing corners match, the foundation is perfectly square.

Moderator: Construction Systems, Foundations, and Masonry & Stone

For more information about me, my qualifications, and/or home inspections please visit my website at:

Glenn Good

05:14PM | 05/14/06
Member Since: 09/10/03
320 lifetime posts
Please note the only thing that I added to Doug’s post above is the parallel walls must also be checked to insure they measure the same when making any corrections to square the building. A trapezoid will also have identical diagonal measurements.

Moderator: Construction Systems, Foundations, and Masonry & Stone

For more information about me, my qualifications, and/or home inspections please visit my website at:


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

The mail slot has enjoyed a long run as a front door staple, and the image of the friendly neighborhood mail carrier slidi... Reused steel windows create an eye-catching splashguard in this walk-in shower. The vintage factory windows bring an inter... A galvanized steel tub is a surprising but charming fixture in this bright and breezy screened patio. It's perfect for was... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Even earthbound, this stunning, colorful egg chair would be an eye-catching accent for any room. Suspended off the ground,... If you lack plumbing skills but have a good sturdy tree, here's the easiest outdoor shower solution of all: Simply attach... Need a window and a door in a tight space? A Dutch door with a window may be your answer. These useful doors are split hor... How do you like this smart use for an old bottle? Clamp an empty wine bottle to a fence or wall near your outdoor deck or ... Simple and striking, a couple of pieces of "lovingly used" furniture creates a special kind of charm. A weathered chair fo... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... Chalkboard labels are available for sale. You can also apply chalkboard paint to pretty much any surface to create your ow... This garden shed has been decked out to the nines. Designer Orla Kiely created the intimate home for a flower trade show, ...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon